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Summer is moving quickly and we have been feeling very behind...this weekend we filled at least four big yard carts with weeds from the front perennial gardens. We have been focusing on our veggie life. What a relief! It was very hot, muggy and mosquitoeee...but it looks beautiful especially if you squint!
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Not only were the tomato hornworms munching our tomato plants, but they were carrying the larvae of the small braconid wasp, Cotesia congregatus.
"Larvae that hatch from wasp eggs laid on the hornworm feed on the inside of the hornworm until the wasp is ready to pupate. The cocoons appear as white projections protruding from the hornworms body (see photo, left). If such projections are observed, the hornworms should be left in the garden to conserve the beneficial parasitoids. The wasps will kill the hornworms when they emerge from the cocoons and will seek out other hornworms to parasitize."
Thanks...
S.J. Wold-Burkness & W.D. Hutchison
Department of Entomology, University of Minnesota
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